Scan the file using a service like VirusTotal before extraction.
Without a public record of this specific file, an "essay" on it would typically focus on the technical nature of such archives or the potential contents based on the naming convention:
Use a sandboxed environment if you must inspect its contents.
If you have encountered this file on the internet, please exercise caution. Files with .7z extensions from unknown sources are common vectors for . It is highly recommended to: Avoid opening the file if the source is untrusted.